My first experiences were perceptually very weird (and awesome, of course), but I didn't really make contact with anything. This time was different.
I breathed in slowly at first while vaping the dmt so that I could try to get as much as possible in one hit, then I cleared the machine with the last bit of breath I could manage. I held it in, and held it in, and held it in. I was feeling an uncomfortable sensation in my throat. I thought I might throw up at first, but it wasn't really accompanied by nausea, so I just tried to ignore it. The room was basically melting at this point as my surroundings seemed to press in on me. I realized that I was still holding that hit in my lungs, and I decided that it had been a pretty long time, so I let it out.
The moment I breathed out, I felt as though there was a being directly in front of me that had been waiting for me to do so and was collecting my exhaled breath as though it were a valuable substance. I wondered if my entire existence was that of a machine designed to produce certain chemicals for the purposes of this being that had been waiting for me to exhale. At this point, I remember asking myself if I could take another hit and decided that I wasn't aware of my body enough to be able to do it.
I don't know what happened to the collector being, but I suddenly was bombarded by two [dare I say hyperdimensinal?] beings. They were pranksters or maybe even sadists, I don't know, but they grabbed the disembodied me and poked and prodded and drenched me in what I perceived as some sort of urine at the time. There was no speaking. I got the impression that they were trying to humiliate me but, being as a point of awareness, I just relished in what everything looked like and what everything felt like. It was all very wonderful, so I don't really know why I thought these beings had it in for me at the time. Maybe they were merely testing me (just an afterthought).
At some point, this weird pranking seemed to stop and I felt as though one of the beings took me as though I were a camera and carried me through a house, at times pointing my senses at specific things that I can't really remember any more. At some point, I realized that this house was my own mind, and that the point of taking me through the house was so that I could do some sort of mental house-cleaning. After this strange tour, I remember that the being tried to speak to me, but he didn't speak in words. Instead, he communicated with me using a language consisting of my own memories and personal experiences. I don't remember anything after that accept coming to and realizing that my head had fallen backward into this really uncomfortable position. I'll have to be more careful about that next time.
I wouldn't call this a breakthrough experience, but I don't know if I'll ever be able to use that phrase. Each experience I've had with DMT has not only shown me deeper levels of incredibilia, but has also opened my mind to what an even more incredible DMT experience might be like. My impression is that, even if you think you've had a breakthrough experience, you can always go further, and thus the idea of breaking through is not very useful anymore. If there is a dead end to the DMT experience, I'm sure that somebody on this site would know, so please correct me if I'm wrong.
Next time, I think I'll try to take that second hit. As hard as it may be, I know it will be completely worth it.
Every day I am thankful that I was introduced to psychedelic drugs.